1. Swap buttermilk with 1 cup milk plus 1 tbsp lemon juice rested 5 minutes; Use 1 cup cheddar plus 0.5 cup parmesan or gruyere; Add 0.5 cup diced jalapeno or cooked crumbled bacon; For extra lift bring eggs and buttermilk to room temperature; Store airtight 3 days or freeze slices up to 2 months